Thrifty is a child theme for the massively popular Builder theme from iThemes that includes complete support for Easy Digital Downloads.
The layout builder provided by the Builder theme lets you easily create dozens of different layouts that perfectly suit your needs. Here’s how iThemes describes it:
The power of Builder starts in the layout editor. Choose from the building blocks of a great web site by inserting modules: header, images, navigation, content area (with or without sidebars), widget bars, HTML areas, and a footer. Complete flexibility without code.